<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>Title</title>
</head>
<body>
 <form id="car_update_form">
     <input type="hidden" name="cid" th:value="${car.cid}">
     汽车名称 <input type="text" name="cname" th:value="${car.cname}"><br>
     价格<input type="text" name="price" th:value="${car.price}"><br>
     类型<input type="tid" th:value="${car.tid}">
 </form>
</body>
</html>